A body is pulled up on an inclined plane of inclination 20° to the horizontal. The angle of friction between the body and the plane is 17°. The force required to pull the body up the plane is minimum when it is applied:

A body is pulled up on an inclined plane of inclination 20° to the ho

1.	A body is pulled up on an inclined plane of inclination 20° to the horizontal. The angle of friction between the body and the plane is 17°. The force required to pull the body up the plane is minimum when it is applied:
A.	At angle of 20° to the plane
B.	At angle of 17° to the plane
C.	In the horizontal direction
D.	Along the plane
Answer» C. In the horizontal direction

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A body is pulled up on an inclined plane of inclination 20° to the horizontal. The angle of friction between the body and the plane is 17°. The force required to pull the body up the plane is minimum when it is applied:

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